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प्रश्न
1 mole of Gold and Silver contain same number of atoms.
पर्याय
True
False
उत्तर
True
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संबंधित प्रश्न
WRITE SHORT ANSWER
What is radioactivity?
Give two examples for each of ionic and covalent bond.
State Dalton’s atomic theory.
How did Neils Bohr visualise the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
The electron shell ______ is nearest to the nucleus.
In what respects do the three isotopes of hydrogen differ? Give their structures.
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
